JPS611183U - distance measuring device - Google Patents
distance measuring deviceInfo
- Publication number
- JPS611183U JPS611183U JP8636184U JP8636184U JPS611183U JP S611183 U JPS611183 U JP S611183U JP 8636184 U JP8636184 U JP 8636184U JP 8636184 U JP8636184 U JP 8636184U JP S611183 U JPS611183 U JP S611183U
- Authority
- JP
- Japan
- Prior art keywords
- light
- phase difference
- photodetector
- light source
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の距離測牢装置の構成を示す図、第２図は
誘導ノイズで誤差を生じることを示す図、第３図は誘導
ノイズで生ずる誤差のうねる様子を示す図、第４図はこ
の考案の一実施例を示す構成図、第５図はこの考案で誘
導ノイズが打ち消せることを示す図で、１は発振器、２
ａ，２ｂは光源、３は駆動回路、４は送信光学系、５は
受信光学系、６は光検出器、７は増幅器、５８は位相差
測定回路、９は演算回路、１０．１２は可動鏡、１１は
固定鏡である。
なお、図中、同一あるいは相当部分には同一符号を付し
て示してある。Fig. 1 is a diagram showing the configuration of a conventional distance measurement device, Fig. 2 is a diagram showing that errors occur due to induced noise, Fig. 3 is a diagram showing how the error caused by induced noise undulates, and Fig. 4 is a block diagram showing an embodiment of this invention, and FIG. 5 is a diagram showing that induced noise can be canceled by this invention. 1 is an oscillator, 2
a, 2b are light sources, 3 is a drive circuit, 4 is a transmitting optical system, 5 is a receiving optical system, 6 is a photodetector, 7 is an amplifier, 58 is a phase difference measuring circuit, 9 is an arithmetic circuit, 10.12 is a movable Mirror 11 is a fixed mirror. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
Claims (1)
弦波で上記光源の出力光を変調する駆動回路と、上記光
源からの光を目標へ照射するための送信光学系と、上記
光源から出て目標で反射されて戻ってきた光を集光する
ための受信光学系と、上記集光した光を光電変換するた
めの光検出器と、上記光検出器の電気出力を所定の信号
強度まで増幅するための増幅器と、上記発振器からの正
弦波と上記光検出器で得た正弦波の位相差を測る位相差
測定回路と、上記光源からの光を直接に上記光検出器へ
も導けるようにした光路切換装置と、上記光源からの光
で目標を照射して得た上記位相差と、上記光源の光を直
接上記光検出器に導いて得た上記位相差とから上記光源
からの光が目標まで往復するに要する位相差を算出する
演算回路を備えた距離測定装置において、上記光源とし
て２つの光源を設け、それぞれ１８０°位相差で変調し
て光路切替鏡で切替えて用いるようにしたことを特徴と
する距離測定装置。an oscillator that generates a sine wave; a light source; a drive circuit that modulates output light of the light source with the sine wave of the oscillator; a transmission optical system that irradiates light from the light source to a target; a receiving optical system for condensing the light reflected by the target and returning, a photodetector for photoelectrically converting the condensed light, and a photodetector for converting the electric output of the photodetector to a predetermined signal strength. an amplifier for amplification, a phase difference measuring circuit for measuring the phase difference between the sine wave from the oscillator and the sine wave obtained by the photodetector, and a phase difference measuring circuit for directly guiding the light from the light source to the photodetector. The light from the light source is determined by the optical path switching device, the phase difference obtained by irradiating the target with light from the light source, and the phase difference obtained by directing the light from the light source to the photodetector. In a distance measuring device equipped with an arithmetic circuit that calculates the phase difference required for the light to travel back and forth to the target, two light sources are provided as the light sources, each modulated with a 180° phase difference, and used by switching with an optical path switching mirror. A distance measuring device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8636184U JPS611183U (en) | 1984-06-11 | 1984-06-11 | distance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8636184U JPS611183U (en) | 1984-06-11 | 1984-06-11 | distance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS611183U true JPS611183U (en) | 1986-01-07 |
Family
ID=30637599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8636184U Pending JPS611183U (en) | 1984-06-11 | 1984-06-11 | distance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS611183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01304380A (en) * | 1988-06-02 | 1989-12-07 | Sokkisha Co Ltd | Range finder using optical wave |
| JP2008020261A (en) * | 2006-07-11 | 2008-01-31 | Fujifilm Corp | Distance measuring apparatus |
-
1984
- 1984-06-11 JP JP8636184U patent/JPS611183U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01304380A (en) * | 1988-06-02 | 1989-12-07 | Sokkisha Co Ltd | Range finder using optical wave |
| JP2008020261A (en) * | 2006-07-11 | 2008-01-31 | Fujifilm Corp | Distance measuring apparatus |
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